221520140

素因数分解:

$2^2\times 5^1\times {\mathrm{11076007}}^1$

素因数の和:11076016

約数の個数: 12

約数和(自身を含む): 465192336

約数和(自身を除く): 243672196

約数列:

[1, 2, 4, 5, 10, 20, 11076007, 22152014, 44304028, 55380035, 110760070, 221520140]

約数ペア:

[(1, 221520140), (2, 110760070), (4, 55380035), (5, 44304028), (10, 22152014), (20, 11076007)]